2. Signaling Pathways
  3. Neuronal Signaling
  4. Monoamine Oxidase

Monoamine Oxidase

MAO

Monoamine Oxidase

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Monoamine oxidases (MAO) are a family of enzymes that catalyze the oxidation of monoamines. They are found bound to the outer membrane of mitochondria in most cell types in the body. They belong to the protein family of flavin-containing amine oxidoreductases. Monoamine oxidases catalyze the oxidative deamination of monoamines. Oxygen is used to remove an amine group from a molecule, resulting in the corresponding aldehyde and ammonia. Monoamine oxidases contain the covalently bound cofactor FAD and are, thus, classified as flavoproteins. Because of the vital role that MAOs play in the inactivation of neurotransmitters, MAO dysfunction is thought to be responsible for a number of psychiatric and neurological disorders. MAO-A inhibitors act as antidepressant and antianxiety agents, whereas MAO-B inhibitors are used alone or in combination to treat Alzheimer’sand Parkinson’s diseases.

Monoamine Oxidase Isoform Specific Products:

Monoamine Oxidase Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-70057
    Safinamide
    		Inhibitor 99.89%
    Safinamide is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC50=0.098 µM) over MAO-A (IC50=580 µM). Safinamide also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC50=8 µM) than at resting (IC50=262 µM) potentials. Safinamide has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke etc.al.
    Safinamide
  • HY-138625
    LOX-IN-3
    		Inhibitor 99.97%
    LOX-IN-3 is an orally active lysyl oxidase (LOX) inhibitor. LOX-IN-3 can be used for fibrosis, cancer and angiogenesis research.
    LOX-IN-3
  • HY-107422
    Lenumlostat
    		99.52%
    PAT-1251 is a potent, selective and oral lysyl oxidase-like 2 (LOXL2) inhibitor, with IC50s of 0.71 and 1.17 μM for hLOXL2 and hLOXL3, respectively, and also potently inhibits mouse, rat, and dog LOXL2 (IC50s, 0.10, 0.12, and 0.16 μM, respectively); PAT-1251 is used in the research of fibrotic diseases.
    Lenumlostat
  • HY-B1311
    Proadifen hydrochloride
    		Inhibitor 99.98%
    Proadifen (SKF-525A) hydrochloride is a non-competitive Cytochrome P450 inhibitor with an IC50 value of 19 μM. Proadifen hydrochloride reduces monoamine oxidase A (MAO-A) activity and reverses the antidepressantlike behavioral effect of Imipramine (HY-B1490A) and Desipramine (HY-B1272A) in rats. Proadifen hydrochloride also reduces N, N-dimethyltryptamine (DMT) metabolism in liver microsomes and inhibits N-demethylationand Acridone (HY-W007771) formation. Proadifen hydrochloride augments Lipopolysaccharide (LPS) (HY-D1056)-induced fever and exacerbates Prostaglandin E2 (PGE2) (HY-101952) levels in the rat. Proadifen hydrochloride is promising for research of metabolism-related deseases, ovarian carcinoma, inflammation and dopamine neurons-related deseases.
    Proadifen hydrochloride
  • HY-114286A
    PXS-5153A monohydrochloride
    		Inhibitor 99.67%
    PXS-5153A monohydrochloride is a potent, selective, orally active and fast-acting lysyl oxidase like 2/3 enzymatic (LOXL2/LOXL3) inhibitor, with an IC50 of <40 nM for LOXL2 across all mammalian species and an IC50 of 63 nM for human LOXL3. PXS-5153A monohydrochloride could reduce crosslinks and ameliorates fibrosis.
    PXS-5153A monohydrochloride
  • HY-14855B
    Tedizolid phosphate
    		Inhibitor 99.65%
    Tedizolid phosphate (TR-701FA) is a MAO-A and MAO-B inhibitor with activity against Gram-positive bacteria.
    Tedizolid phosphate
  • HY-14605
    Rasagiline mesylate
    		Inhibitor 99.82%
    Rasagiline (R-AGN1135) mesylate is a highly potent selective irreversible mitochondrial monoamine oxidase (MAO) inhibitor with IC50s of 4.43 nM and 412 nM for rat brain MAO B and A activity, respectively. Rasagiline (mesylate) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Rasagiline mesylate
  • HY-B1359
    Methylene blue trihydrate
    		Inhibitor ≥98.0%
    Methylene blue trihydrate (C.I. Basic Blue 9 trihydrate) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue trihydrate is a vasopressor and is often used as a dye in several medical procedures. Methylene blue trihydrate has antinociception, antimalarial, antidepressant and anxiolytic activity effects. Methylene Blue trihydrate has the potential for methemoglobinemias, neurodegenerative disorders and ifosfamide-induced encephalopathytreatment.
    Methylene blue trihydrate
  • HY-112623
    Vafidemstat
    		Inhibitor 99.53%
    Vafidemstat (ORY-2001) is an oral, brain penetrant, dual lysine-specific histone demethylase (LSD1)/MAO-B inhibitor.
    Vafidemstat
  • HY-19915
    Contezolid
    		Inhibitor 99.37%
    Contezolid (MRX-I), a new and orally active oxazolidinone, is an antibiotic in study for complicated skin and soft tissue infections (cSSTI) caused by resistant Gram-positive bacteria. Contezolid (MRX-I) markedly reduces potential for myelosuppression and monoamine oxidase inhibition (MAOI).
    Contezolid
  • HY-P99047
    Simtuzumab
    		Inhibitor 98.69%
    Simtuzumab (AB 0024; GS 6624) is a monoclonal antibody directed against Lysyl oxidase like-2 (LOXL2). Simtuzumab can be used for the research of primary sclerosing cholangitis (PSC).
    Simtuzumab
  • HY-B0886A
    Iproniazid
    		Inhibitor 99.91%
    Iproniazid is a non-selective, irreversible monoamine oxidase (MAO) inhibitor of the hydrazine class. Iproniazid has antidepressive activity.
    Iproniazid
  • HY-40294
    Indazole
    		Inhibitor 99.72%
    Indazole, also called isoindazole, a heterocyclic aromatic organic compound. Its derivatives display a broad variety of biological activities including anti-inflammatory, antibacterial, anti-HIV, antiarrhythmic, antifungal and antitumour properties. Indazole and its derivatives can be used for research of cancer, neurological disorders, cardiovascular diseases, gastrointestinal diseases.
    Indazole
  • HY-112726
    PXS-4728A
    		Inhibitor 98.79%
    PXS-4728A (BI-1467335) is a selective, orally active inhibitor of semicarbazide-sensitive amine oxidase (SSAO). PXS-4728A ameliorates chronic obstructive pulmonary disease in mice.
    PXS-4728A
  • HY-13929
    Isocarboxazid
    		Inhibitor 98.94%
    Isocarboxazid is a non-selective and irreversible inhibitor of monoamine oxidase, with an IC50 of 4.8 μM for rat brain monoamine oxidase in vitro.
    Isocarboxazid
  • HY-B1199
    Nialamide
    		Inhibitor
    Nialamide is a non-selective, irreversible monoamine oxidase inhibitor (MAOI) of the hydrazine class that was used as an antidepressant.
    Nialamide
  • HY-N7204
    4-Hydroxyderricin
    		Inhibitor 99.97%
    4-Hydroxyderricin, the major active ingredients of Angelica keiskei Koidzumi, is an orally active, potent selective MAO-B (Monoamine oxidase inhibitors) inhibitor with an IC50 of 3.43 μM. 4-Hydroxyderricin also mildly inhibits dopamine β (DBH)-hydroxylase activity. 4-Hydroxyderricin has antidepressant activity, anti-allergic, anti-diabetic, anti-oxidant, and antitumor effects. 4-Hydroxyderricin promotes apoptosis and cell cycle arrest through regulating PI3K/AKT/mTOR pathway in hepatocellular cells. 4-Hydroxyderricin inhibits osteoclast formation and accelerates osteoblast differentiation. 4-Hydroxyderricin is promising for research of inflammatory diseases.
    4-Hydroxyderricin
  • HY-W015490
    1,4-Naphthoquinone
    		99.97%
    1,4-Naphthoquinone is a potential pharmacophore for inhibition of both MAO (monoamine oxidase) and DNA topoisomerase activities, this latter associated with antitumor activity.
    1,4-Naphthoquinone
  • HY-70057A
    Safinamide mesylate
    		Inhibitor 99.87%
    Safinamide (FCE 26743; EMD 1195686) mesylate is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC50=0.098 μM) over MAO-A (IC50=580 nM). Safinamide mesylate also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC50=8?μM) than at resting (IC50=262?μM) potentials. Safinamide mesylate has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke et.al.
    Safinamide mesylate
  • HY-101392
    Harmane
    		Inhibitor 99.91%
    Harmane is a benzodiazepine receptor inhibitor (IC50=7 μM), with IC50 values for mACh, Opioid Receptor, MAO-A/B, and α2-adrenergic receptor of 24 μM, 2.8 μM, 0.5 μM, 5 μM, and 18 μM, respectively. Harmane inhibits the I1 imidazoline receptor (IC50 = 30 nM) to reduce blood pressure and has antidepressant, anti-anxiety, anticonvulsant, and analgesic effects. Harmane inhibits dopamine biosynthesis by decreasing tyrosine hydroxylase (TH) activity and enhancing L-DOPA-induced cytotoxicity in PC12 cells. Additionally, Harmane can increase the mutagenic effect induced by 2-acetylaminofluorene (AAF).
    Harmane
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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